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Added Co-rotated Linear FEM implementation with stiffness warping based on Kenny Erleben's book Physics based Animation and the accompanying source code (OpenTissue), Realtime Physics course notes and Mathias Muller's seminal paper on stiffness warping. Special thanks to Erwin Coumans for providing a working implementation of FEM (http://www.bulletphysics.org/Bullet/phpBB3/viewtopic.php?f=4&t=7241) which was helpful in understanding the theory given in the book. This demo shows a bar deformed based on Co-rotated Linear FEM. Pressing the spacebar key toggles the stiffness warping on (default) and off.
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OpenCloth_CoRotated_Linear_FEM/OpenCloth_CoRotated_Linear_FEM.sln
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OpenCloth_CoRotated_Linear_FEM/OpenCloth_CoRotated_Linear_FEM/main.cpp
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